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This national standard was proposed by China National Textile and Apparel Council.
This national standard is under the jurisdiction of Knitwear Technical Sub Committee of National Technical Committee 209 on Textiles of Standardization Administration of China (SAC/TC 209/SC 6).
This national standard was drafted by national Knitwear Quality Supervision and Inspection Center, Zhongshan Xiahu Shijia garments Co., Ltd., Shenzhen Textile Fiver Inspection Institute, Qingdao Jifa Group Co., Ltd., Gage (Suzhou) Textile Co., Ltd., Shanghai Meters/bonwe Garments Co., Ltd., Lilanz (China) Co., Ltd., Hongdou Group Co., Ltd., Guangdong Esquel Textile Co., Ltd., Anta (China) Co., Ltd. etc.
This national standard was prepared by Wu Peizhi, Guo Changqi, Yang Zhimin, Huang Yuhua, Wang Qindu, Sun Yuanshu, Wang Liangxing, Ge Dongying, Zhang Yugao, Li Su.
Knitted T-shirt
针织T恤衫
1 Scope
This standard specifies types, requirements, testing rules, judgment rules, product, use instruction, packaging, transportation and storage of knitted T-shirts.
This standard is applicable to identifying quality of all kinds of knitted T-shirts.
2 Normative references
The following normative documents contain provisions which, through reference in this standard constitute provisions of this standard. For dated reference, subsequent amendments to (excluding content of corrigenda), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references the latest edition of the normative document referred to applies.
GB/T 250 Textiles—Tests for color fastness—Grey scale for assessing change in color (GB/T 250-2008, ISO 105-A02: 1993, IDT)
GB/T 251 GB/T 251 Textiles—Tests for color fastness—Grey scale for assessing change in color (GB/T 251-2008, ISO 105-A03: 1993, IDT)
GB/T 1335 (all parts). Apparel sizes
GB/T 2910 Textile—Binary fibre mixtures—Quantitative chemical analysis (GB/T 2910-1997, eqv ISO 1833: 1977)
GB/T 2911 Textiles—Ternary fibre mixtures—Quantitative analysis (GB/T 2911- 1997, eqv ISO 5088: 1976)
GB/T 2912.1 Textiles—Determination of formaldehyde—Part 1: Free and hydrolized formaldehyde (Water extraction method)
GB/T 3920 Textiles—Tests for color fastness—Color fastness to rubbing. (GB/T 3920-1997, eqv ISO 105 X12: 1993)
GB/T 3921 Textiles—Tests for color fastness—Color fastness to washing with soap or soap and soda (GB/T 3921-2008, ISO 105-C10, 2006, MOD)
GB/T 3922 Textiles—Testing method for color fastness to perspiration (GB/T 3922-1995, eqv ISO 105-E04: 1994)
GB/T 4802.1 Textiles—Determination of fabric propensity to surface fuzzing and to pilling—Part 1:Circular locus method
GB/T 4856 Package of cotton goods and knitwear
GB 5296.4 Instructions for use of products of consumer interest--Instructions for use of textiles and apparel
GB/T 5713 Textiles—Tests for color fastness—Color fastness to water (GB/T 5713-1997, eqv ISO 105-E01: 1994)
GB/T 6411 A series of size of cotton knitted underwear
GB/T 7573 Textiles-—Determination of PH of aqueous extract (GB/T 7573-2002, ISO 3071; 1980 MOD)
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values 3
GB/T 8427 Textiles—Tests for Color Fastness—Color Fastness to Artificial Light: Xenon Arc
GB/T 8878 Cotton Knitted Underwear
GB/T 14576 Textiles—Tests for color fastness - Color fastness to light of textiles wetted with artificial perspiration
GB/T 14801 Test method for skewness and bow in woven and knitted fabrics
GB/T 19976 Textiles—Determination of bursting strength—Steel ball method
GB 18401 Chinese National General Safety Technical Code for Textile Products
FZ/T 01026 Textiles—Quantitative chemical analysis—Quaternary fiber mixtures
FZ/T 01053 Textiles—Identification of fiber content
FZ/T 01057 (All parts) Test method for identification of textile fibers
FZ/T 01095 Textile–Test method of elastane fiber content
GSB 16-1523 2002 Hosiery teasing pilling sample picture
GSB 16-2159-2007 Knitwear standard depth scale (1/2)
GSB 16-2500-2008 Sample picture of surface defects on knitted fabric color sample picture
3 Product types
Types of knitted T-shirt should comply with the provisions of GB/T 6411 or GB/T 1335 (all parts).
4 Requirements
4.1 Content of requirements
Requirements are divided into two aspects: internal quality and appearance quality. Internal quality includes indexes such as fiber content, formaldehyde content, pH value, foreign smell, decomposable aromatic amine dye, washing size change rate, twist rate after washing, bursting strength, pilling, complex colour fastness to light and perspiration, color fastness to light, color fastness to soaping, color fastness to water, color fastness to perspiration, color fastness to rubbing, printing color fastness to soaping, printing color fastness to rubbing, splicing mutual dyeing degree etc. Appearance quality includes indexes such as surface flaw, specification size deviation, body size difference and sewing provisions etc.
4.2 Grading provisions
4.2.1 Quality grades of knitted T-shirt is divided into superior product, first-class product and qualified product.
4.2.2 Quality grading of knitted T-shirt: internal quality is graded according to batch (delivery batch), appearance quality is graded according to piece, the two are combined and grading is conducted according to the lowest grade.
4.3 Internal quality requirements
4.3.1 For internal quality requirements, see table 1.
